Charging dock



FIG. 1 is a perspective view of a charging dock showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a back view thereof.

The broken lines in the drawings are for the purpose of illustrating environmental subject matter and portions of the charging dock that form no part of the claimed design. 

CLAIM The ornamental design for a charging dock, as shown and described. 